Java/J2ME/RadioButton

List RadioButton

//jad file (please verify the jar size)
/*
MIDlet-Name: ListRadioButtons
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: ListRadioButtons.jar
MIDlet-1: ListRadioButtons, , ListRadioButtons
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
public class ListRadioButtons extends MIDlet implements CommandListener {
  private Display display;
  private Command exit = new Command("Exit", Command.EXIT, 1);
  private Command submit = new Command("Submit", Command.SCREEN, 2);
  private List list = new List("Select one", List.EXCLUSIVE);
  public ListRadioButtons() {
    display = Display.getDisplay(this);
    list.append("Male", null);
    list.append("Female", null);
    list.addCommand(exit);
    list.addCommand(submit);
    list.setCommandListener(this);
  }
  public void startApp() {
    display.setCurrent(list);
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  public void commandAction(Command command, Displayable Displayable) {
    if (command == submit) {
      Alert alert = new Alert("Choice", list.getString(list.getSelectedIndex()), null, null);
      alert.setTimeout(Alert.FOREVER);
      alert.setType(AlertType.INFO);
      display.setCurrent(alert);
      list.removeCommand(submit);
    } else if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    }
  }
}

RadioButton Demo

//jad file (please verify the jar size)
/*
MIDlet-Name: RadioButtonsMIDlet
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: RadioButtonsMIDlet.jar
MIDlet-1: RadioButtonsMIDlet, , RadioButtonsMIDlet
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
public class RadioButtonsMIDlet extends MIDlet implements CommandListener {
  private Display display;
  private Form form = new Form("Gender");
  private Command exit = new Command("Exit", Command.EXIT, 1);
  private Command process = new Command("Process", Command.SCREEN, 2);
  private ChoiceGroup gender = new ChoiceGroup("Enter Gender", Choice.EXCLUSIVE);
  private int currentIndex;
  private int genderIndex;
  public RadioButtonsMIDlet() {
    display = Display.getDisplay(this);
    gender.append("Female", null);
    currentIndex = gender.append("Male ", null);
    gender.setSelectedIndex(currentIndex, true);
    genderIndex = form.append(gender);
    form.addCommand(exit);
    form.addCommand(process);
    form.setCommandListener(this);
  }
  public void startApp() {
    display.setCurrent(form);
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    } else if (command == process) {
      currentIndex = gender.getSelectedIndex();
      StringItem message = new StringItem("Gender: ", gender.getString(currentIndex));
      form.append(message);
      form.delete(genderIndex);
      form.removeCommand(process);
    }
  }
}

RadioButtons 2

//jad file
/*
MIDlet-Name: RadioButtons1
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: RadioButtons1.jar
MIDlet-1: RadioButtons1, , RadioButtons1
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100
*/
import javax.microedition.lcdui.Choice;
import javax.microedition.lcdui.ChoiceGroup;
import javax.microedition.lcdui.rumand;
import javax.microedition.lcdui.rumandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemStateListener;
import javax.microedition.lcdui.StringItem;
import javax.microedition.midlet.MIDlet;
public class RadioButtons1 extends MIDlet implements ItemStateListener, CommandListener {
  private Display display;
  private Form form = new Form("");
  private Command exit = new Command("Exit", Command.EXIT, 1);
  private ChoiceGroup radioButtons = new ChoiceGroup("Select Your Color", Choice.EXCLUSIVE);
  private int defaultIndex;
  public RadioButtons1() {
    display = Display.getDisplay(this);
    radioButtons.append("Red", null);
    radioButtons.append("White", null);
    radioButtons.append("Blue", null);
    radioButtons.append("Green", null);
    defaultIndex = radioButtons.append("All", null);
    radioButtons.setSelectedIndex(defaultIndex, true);
    form.addCommand(exit);
    form.setCommandListener(this);
    form.setItemStateListener(this);
  }
  public void startApp() {
    display.setCurrent(form);
  }
  public void pauseApp() {
  }
  public void destroyApp(boolean unconditional) {
  }
  public void commandAction(Command command, Displayable displayable) {
    if (command == exit) {
      destroyApp(true);
      notifyDestroyed();
    }
  }
  public void itemStateChanged(Item item) {
    if (item == radioButtons) {
      StringItem msg = new StringItem("Your color is ", radioButtons.getString(radioButtons
          .getSelectedIndex()));
      form.append(msg);
    }
  }
}